1 files changed, 2 insertions, 1 deletions
diff --git a/src/test/addrman_tests.cpp b/src/test/addrman_tests.cpp
index 5e5c5eba69..79c7102c4f 100644
--- a/src/test/addrman_tests.cpp
+++ b/src/test/addrman_tests.cpp
@@ -34,6 +34,7 @@ public:
     //! Ensure that bucket placement is always the same for testing purposes.
     void MakeDeterministic()
     {
+        LOCK(cs);
         nKey.SetNull();
         insecure_rand = FastRandomContext(true);
     }
@@ -87,11 +88,11 @@ public:
     {
         CAddrMan::Clear();
         if (deterministic) {
+            LOCK(cs);
             nKey.SetNull();
             insecure_rand = FastRandomContext(true);
         }
     }
-
 };
 
 static CNetAddr ResolveIP(const std::string& ip)